package com.ruoyi.common;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Component;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by xiaoban on 2019/5/9.
 * httpclient封装类
 */
@Component
public class ClientUtils {
    public static JSONObject doGetMethodAddToken(String token,String url) throws ClientProtocolException, IOException {
        HttpClient httpclient = HttpClients.createDefault();
        //String uri = URLEncoder.encode(url,"UTF-8");
        System.out.println(url);
        // 创建httpget.
        HttpGet httpget = new HttpGet(url);

        httpget.addHeader("token",token);
        //System.out.println("executing request " + httpget.getURI());
        HttpResponse response = httpclient.execute(httpget);
        String result = EntityUtils.toString(response.getEntity(), "utf-8");
        JSONObject obj = JSONObject.parseObject(result);
        return obj;
    }
    /**
     * POST             请求
     *
     * @param url    请求地址
     * @param params 请求参数
     * @param encode 编码格式
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     */
    public static String doPostMethod(String url, String params, String encode, String token) throws ClientProtocolException, IOException {
        HttpClient httpclient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);

        httpPost.addHeader("Content-Type", "application/json;charset=UTF-8");

        httpPost.setHeader("token", token);

        HttpEntity entity = new StringEntity(params, encode);
        httpPost.setEntity(entity);

        HttpResponse response = httpclient.execute(httpPost);
        String result = EntityUtils.toString(response.getEntity(), "utf-8");
        //JSONObject obj = JSONObject.parseObject(result);
        System.out.println(result);
        return result;
    }

    /**
     * Post stream
     *
     * @param host
     * @param path
     * @param method
     * @param headers
     * @param querys
     * @param
     * @return
     * @throws Exception
     */
    public static HttpResponse doPost(String host, String path, String method,
                                      Map<String, String> headers,
                                      Map<String, String> querys,
                                      Map<String, String> bodys)
            throws Exception {
        HttpClient httpClient = wrapClient(host);

        HttpPost request = new HttpPost(buildUrl(host, path, querys));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }

        if (bodys != null) {
            List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();

            for (String key : bodys.keySet()) {
                nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
            }
            UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
            formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
            request.setEntity(formEntity);
        }

        return httpClient.execute(request);
    }
    private static HttpClient wrapClient(String host) {
        HttpClient httpClient = new DefaultHttpClient();
        if (host.startsWith("https://")) {
            sslClient(httpClient);
        }

        return httpClient;
    }
    private static void sslClient(HttpClient httpClient) {
        try {
            SSLContext ctx = SSLContext.getInstance("TLS");
            X509TrustManager tm = new X509TrustManager() {
                @Override
                public X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
                @Override
                public void checkClientTrusted(X509Certificate[] xcs, String str) {

                }
                @Override
                public void checkServerTrusted(X509Certificate[] xcs, String str) {

                }
            };
            ctx.init(null, new TrustManager[] { tm }, null);
            SSLSocketFactory ssf = new SSLSocketFactory(ctx);
            ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
            ClientConnectionManager ccm = httpClient.getConnectionManager();
            SchemeRegistry registry = ccm.getSchemeRegistry();
            registry.register(new Scheme("https", 443, ssf));
        } catch (KeyManagementException ex) {
            throw new RuntimeException(ex);
        } catch (NoSuchAlgorithmException ex) {
            throw new RuntimeException(ex);
        }
    }

    private static String buildUrl(String host, String path, Map<String, String> querys) throws UnsupportedEncodingException {
        StringBuilder sbUrl = new StringBuilder();
        sbUrl.append(host);
        if (!StringUtils.isBlank(path)) {
            sbUrl.append(path);
        }
        if (null != querys) {
            StringBuilder sbQuery = new StringBuilder();
            for (Map.Entry<String, String> query : querys.entrySet()) {
                if (0 < sbQuery.length()) {
                    sbQuery.append("&");
                }
                if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
                    sbQuery.append(query.getValue());
                }
                if (!StringUtils.isBlank(query.getKey())) {
                    sbQuery.append(query.getKey());
                    if (!StringUtils.isBlank(query.getValue())) {
                        sbQuery.append("=");
                        sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
                    }
                }
            }
            if (0 < sbQuery.length()) {
                sbUrl.append("?").append(sbQuery);
            }
        }

        return sbUrl.toString();
    }

    /**
     * GET
     *
     * @param url
     * @param
     * @param
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     */
    public static JSONObject doGetMethod(String url) throws ClientProtocolException, IOException {
        HttpClient httpclient = HttpClients.createDefault();

        // 创建httpget.
        HttpGet httpget = new HttpGet(url);
        httpget.setConfig(getRequestConfig());
        //System.out.println("executing request " + httpget.getURI());
        HttpResponse response = httpclient.execute(httpget);
        String result = EntityUtils.toString(response.getEntity(), "utf-8");
        JSONObject obj = JSONObject.parseObject(result);
        return obj;
    }

    public static RequestConfig getRequestConfig(){
        RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(5000)
                .setSocketTimeout(5000)
                .setConnectionRequestTimeout(5000)
                .build();
        return requestConfig;
    }

    /**
     * GET
     *
     * @param url
     * @param
     * @param
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     */
    public static String doGetMethodString(String url) throws ClientProtocolException, IOException {
        HttpClient httpclient = HttpClients.createDefault();

        // 创建httpget.
        HttpGet httpget = new HttpGet(url);
        //System.out.println("executing request " + httpget.getURI());
        HttpResponse response = httpclient.execute(httpget);
        String result = EntityUtils.toString(response.getEntity(), "utf-8");
        return result;
    }
}
